
/*
 * Copyright 2011 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
#include "SampleCode.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "SkCornerPathEffect.h"
#include "SkCullPoints.h"
#include "SkGradientShader.h"
#include "SkPath.h"
#include "SkRegion.h"
#include "SkShader.h"
#include "SkUtils.h"

static void create_bitmap(SkBitmap* bitmap)
    {
    const int W = 100;
    const int H = 100;
    bitmap->setConfig(SkBitmap::kARGB_8888_Config, W, H);
    bitmap->allocPixels();

    SkCanvas canvas(*bitmap);
    canvas.drawColor(SK_ColorRED);
    SkPaint paint;
    paint.setColor(SK_ColorBLUE);
    canvas.drawCircle(SkIntToScalar(W)/2, SkIntToScalar(H)/2, SkIntToScalar(W)/2, paint);
    }

class WritePixelsView : public SampleView
    {
        SkPath fPath;
    public:
        WritePixelsView() {}

    protected:
        // overrides from SkEventSink
        virtual bool onQuery(SkEvent* evt)
            {
            if (SampleCode::TitleQ(*evt))
                {
                SampleCode::TitleR(evt, "WritePixels");
                return true;
                }
            return this->INHERITED::onQuery(evt);
            }

        virtual void onDrawContent(SkCanvas* canvas)
            {
            SkBitmap bitmap;
            create_bitmap(&bitmap);
            int x = bitmap.width() / 2;
            int y = bitmap.height() / 2;

            SkBitmap subset;
            bitmap.extractSubset(&subset, SkIRect::MakeXYWH(x, y, x, y));

            canvas->translate(SkIntToScalar(20), SkIntToScalar(20));

            canvas->writePixels(bitmap, 0, 0);
            canvas->writePixels(subset, 0, 0);
            }

    private:
        typedef SampleView INHERITED;
    };

//////////////////////////////////////////////////////////////////////////////

static SkView* MyFactory()
    {
    return new WritePixelsView;
    }
static SkViewRegister reg(MyFactory);

